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3 Sheets-Sheet 1.

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} 0. 0. WYLL'IE. APPARATUS FOR UTILIZING WASTE GASES FROM COKE OVENS.

No. 427,210. Patented May 6, 1890.

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(No Mode1.) A 3 Sheets-Sheet 2.

0. 0. WYLLIE. APPARATUS FOR UTILIZING WASTE. GASES PROM COKE OVENS. N0. 427,210. A Patented May 6, 1890.

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(No Model.)

0. 0, WYLLIE. APPARATUS FOR. UTILIZING. WASTE GASES FROM COKE OVENS.

Nor 427,210..

Ptented 'May 6,1890.

iwi lwuzoo eo anaemic; 64;, e. W {7 UNIT D STATES ATENT 3 OFFICE- COLIN CAMPBELL IVYLLIE, OF LONDON, COUNTY OF MIDDLESEX, ENGLAND, ASSIGNOR OF ONE-HALF TO JAMES P. WITI-IEROWV, OF PITTSBURG, PENN- SYLVANIA.

APPARATUS FOR UTILIZING WASTE GASES FROM COKE-OVENS.-

SPECIFICATION forming part of Letters Patent No. 427,210, dated May 6, Application filed August 11, 1887- Serial ITO- 246,755 (No model.)

To all whom it may concern.-

Be it known that I, COLIN CAMPBELL \VYLLIE, of London, in the county of Middlesex, England, have invented a new and useful Improvement in Apparatus for Utilizing Waste Gases from Coke-Ovens, &c.; and I do hereby declare the following to be a full, clear, and exact description thereof.

In the accompanying drawings, Figure I is a plan view of apparatus illustrating my invention. Fig. 2 is a side and partly sectional elevation; and Fig. 3 is a perspective view of apparatus, including coking-ovens, the hotblast stove ofa blast-furnace, and boiler-furnaces, illustrating my invention.

Like symbols of reference denote like parts.

The object of my invention is to provide improved means for the utilization of Waste combustible gases from coke-ovens and similar furnaces wherein waste gases are produced; and in order that others skilled in the art may be able to apply the same intelligently to use I will now proceed to describe the construction and operation of the apparatus which I have devised.

Referring to Figs. 1, 2, and 3, 2 2 are a number of adjacent coke-ovens of usual construction, having openings 3 at the top for receiving the charges of coal, and drawing-holes 4, through which the coke is withdrawn after the expulsion of the volatile matters of the coal.

5 are passages or flues, through which are conducted the gases evolved during the coking process. These passages are connected with a large gas-main or conduit-pipe 6 by goose-neck pipes 7 which are swiveled to or suspended in any suitable manner from the conduit-pipe at points 8, and are preferably provided with suitable sockets 9 for the reception of levers 10, whereby the goose-necks may be turned to connect or disconnect the main pipe 6 with or from the gas-fines 5, as shown, respectively, by full and dotted lines in Fig. 1. In order that they may be easily turned, these goose-neck pipes are preferably provided at the bottom with flanges 11, which rest on and move in contact with a plate or or other plain surface on the top of the cokeoven. The goose-neck pipes are provided also with flanges 11 at their tops,which similarly co-operate with mouths 6 in the gasconduit bottom. These flanges 11 and 11 subserve' the additional purpose of closing the openings in the ovens and mouths of the gas-conduit when the goose-neck pipes are swung aside. It Will be observed that the goose-neck pipes being suspended midway between their ends, they are rotatable and have as their axes their suspension devices.

The main pipe 6 conducts the gases from thecoke-ovens to the gas-burners 12 of a boiler-furnace 13,01 other suitable place of use, and, if desired, the supply of. gas thus conducted from the coke-ovens may be supplemented by gas drawn from a blast-furnace 23, the supply from this source being regulable by means of a suitable water-cooled valve 14. The union of the gases of the cokef oven with the gas of the blast-furnace will be found very useful in many cases, and greatly increases the heating capacity of the latter gas. By means ofthe pipes 7, which may be connected or disconnected at will, they gas may be drawn from the ovens through the pipe 6 at proper and convenient times, and at other times the connection between the main pipe and the ovens may be altogether cut off.

I am aware that I am not the first to draw off the gases from coke-ovens and blast-furnaces through conduits, and therefore do not claim the same broadly.

My invention relates to the construction of I use of the pump there is insured a uniform draft on the ovens, rendering them independent of varying atmospheric conditions, and consequently making them regular in their action and production. A serious difliculty to be overcome in the use of pumping-engines for this purpose is the destructive effect of the hot gases upon their mechanism. To prevent this, I have devised a plan for separating the pump-cylinder from the direct current of the gas by interposing a body L in the line of the pipe 6, the ends of which are connected by smaller pipes 18, and from these pipes 19 and 20 lead to the cylinder 15,

one to each end thereof. At the junction of the pipes 18 with the main 6 there are watercooled valves 21, which are operated by levers connected directly with the engine 16 or' some of its driven parts, so that a positiveand certain action is imparted thereto, and the valves are made as little as possibleliable' to be affected by the heat of the gases. As will be apparent from inspection of the drawings, the pump, when in operation, draws a current of gas through that part of the main pipe back of the pump and impels the gas forward in advance of it. The gas in the pipes 19 and 20 is not in the current of moving gas, but is to a degree dead or motionless gas, which simply transmits to the gas in the main pipe the exhaustion and impacts of the piston of the pumping-engine. isolating the cylinder of the pumping-engine from the direct current of hot gases I secure the advantages which I have noted above.

In the following claims I use the word furnace generically, intending to include By thus f thereby coke-ovens and other furnaces which produce combustible gases.

I do not desire to limit myself to the pre cise form and construction of the parts which I have shown and described, since they may be varied by those skilled in the art; but

I claim as my invention- 1. Thecombinatiomwith afurnace adapted to produce combustible gases, of a gas main or conduit leading therefrom, and a pneumatic pump whose cylinder and valves are indirectly connected with the gas-conduit by means of branch pipes, whereby a body of dead gas is interposed between the main cond-uit and the cylinder, substantially as and j.for the purpose described.

2. The combination,with a furnace adapted to produce combustible gases, of a gas main or conduit leading" therefrom, pipes 18 inter- 5 posed in theline thereof, a pneumatic pump whose cylinder is connected indirectly with the said pipes 18 by means of branch pipes,

jan-d having valves controlling the connections of said pipes withthe gas main or con purpose described;

3. The combination,with afurnace adapted to produce combustiblegases, of a gas main ;or conduit leading therefrom, a pneumatic pump connected therewith and havingvalves Q controlling the gas main or conduit, said valves being mechanically connected with i the pump and positively moved, substantially as shown and described.-

In testimony whereof I have hereunto set i my hand this 12th day of May, A. D. 1887.

. COLIN CAMPBELL WYLLIE. Witnesses:

ROBERT W. HEMEL,

CHARLES T. ARNBERG. 

